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MaleficentPi t1_iy056mk wrote

Reply to comment by Fuzzy_Chom in How to safely ground this neutral wire by asuhayda

That’s not why I’d call an electrician. I’d call one because if this exists where the OP found it, it DEFINITELY exists everywhere else, and electricians can usually find where the older wiring would have run, and have tools that can measure amperage loss on existing wire to find out the likely candidates for where knob and tube is still present.

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derphurr t1_iy0bp57 wrote

There is no amperage loss. It's not a thing. There might be voltage drop and arcing.

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MaleficentPi t1_iy0bz1c wrote

…and that’s why I call an electrician, because they CAN find that stuff with various tools, and I know just enough to get myself in trouble with anything more complex than rewiring a line with correct AWG for the circuit.

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